Economics question: indifference curve?

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SUMMARY

The discussion focuses on the characteristics of indifference curves when dealing with two bads in economics. It establishes that the slope of the curve is negative and curved, indicating a trade-off between two undesirable goods. The qualitative behavior remains consistent regardless of the specific ratios of goods A and B, such as 1A=2B or 7.5A=137B. The principles of diminishing marginal utility and the necessity of decreasing one good to maintain total utility are confirmed as fundamental to understanding these curves.

PREREQUISITES
  • Understanding of basic economic concepts, particularly indifference curves.
  • Familiarity with the principles of utility and diminishing marginal utility.
  • Knowledge of trade-offs in consumer choice theory.
  • Ability to interpret graphical representations of economic models.
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  • Research the mathematical formulation of indifference curves in consumer theory.
  • Explore the implications of diminishing marginal utility in real-world scenarios.
  • Study the graphical representation of trade-offs between multiple goods.
  • Investigate the application of indifference curves in welfare economics.
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Economics students, educators, and professionals interested in consumer behavior and utility theory will benefit from this discussion.

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I know if you have two bads the slope is negative and is curved, and the closer to 0 the better.

But what if you have two bads where one is worse? I.e. good a and b are both bads, but you want 5 of good b for every 1 of good a?
 
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The qualitative behavior of the curve does not change. You are looking at points of equal total utility so it doesn't matter if 1A=2B or 7.5A=137B, the behavior is the same. Increasing one must decrease the other in order to maintain total utility (the curve is decreasing) and there is always diminishing marginal utility (the curve is not linear).
 

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